Brick-machine



UNITED STATES PATENT OFFICE.

MARTIN BUCK, JAS. H. BUCK, AND FRS. A. CUSI-IMAN, OF LEBANON, NEWHAMPSHIRE.

BRICK-MACHINE.

Specification of Letters Patent No. 14,947, dated May 27, 1856.

To all 'whom t may concern.'

Be it known that we, MARTIN BUCK, JAMES H. BUCK, and FRANCIS A. CUSH-MAN, of Lebanon, in the county of Grafton and State of New Hampshire,have in- Vented a new and Improved Machine for Molding and PressingHollow Brick; and we do hereby declare that the following is a full,clear, and exact description of the same, reference being had to theannexed drawings, making a part of this specification, in which- Figurel, is a front View of our improvement. Fig. 2, is a transverse verticalsection of the same, the plane of section being t-hrough the center.Fig. 3, is a perspective view of a hollow brick.

Similar letters of reference indicate corresponding parts in the severalfigures.

Our invention consists in a peculiar inanner Vof operating the plunger,and mold clearer, whereby the machine operates automatically, theseveral parts working successively and at the proper time by simplyrotating the driving wheel or pulley as will be hereinafter fully shownand described.

To enable others skilled in the art to make and use our invention, wewill proceed to describe its construction and operation.

A, A, represent two upright posts, which are secured to a base B.

C, represents the driving pulley of the machine. This driving pulley hasa pinion D, on its axis, said pinion gearing into a toothed wheel E,over which a pinion F, is placed, the pinion F, having a smooth space orsurface on a portion of its periphery. The wheel E, is attached to oneend of a shaft G, which has its bearings on the posts A, A. The oppositeend of the shaft G, has a wheel H, upon it, which wheel is toothed on aportion of its periphery, and this wheel has also a toothed fla-nch (a)attached, which flanch also extends around a portion of its periphery.The pinion F, is attached to one end of a shaft I, which has itsbearings on the posts A, A, and the opposite end of this shaft has apinion J, upon it, having a smooth surface (b) on its periphery as shownin Fig. 2. TheV pinion J, is directly over the wheel H.

K, is a pinion attached to the outer end of a shaft L, which has itsbearings at the lower end of one of the posts A. The pinion K, has alsoa smooth portion (c) on its periphery, as shown in Fig. ,2. On the innerend of the shaft L, there is placed a crank M, to which a pitman N, isconnected. This pitman is attached to a lever frame O, the lower end ofwhich works on centers (d) in the base B.

The shaft I, has a crank P, at its center, and a pitman Q, is attachedto this crank, the outer end of said pitman being connected to a toggleR, the outer end of the upper arm of which is connected to a cross pieceat the upper ends of the two posts. The `lower end of the lower arm ofthe toggle is connected to the upper end of a frame T, which is fittedand works between the two posts A, A. To the center of the lower part ofthe frame T, a plunger U, is attached.

V, represents the mold which is secured between the two posts A, A,underneath the plunger U. The mold is perfectly stationary, and has anupright core or projection (e) within it, as shown in Fig. 2, and has ablock or mold clearer W, within it, the block or clearer fitting aroundthe core or project-ion (e). The plunger U, has a recess (f) within it,in which the core (e) passes, when the plunger is depressed.

X, is a sand or clay box which works on a proper guide or way directlyover the mold. The sand or clay box is connected by a pitman Y, to theupper end of the lever frame O, see Fig. 2.

Z, represents a hopper placed back of the two posts A, A. The lower endof this hopper extends down as far as the upper end of the sand or claybox X.

To the under side of the block or mold clearer W, there are attached twovertical rarms (g) (g) having racks (h) on their front and back sides.The front racks (l1.) gear into part pin-ions A', A, which are placed ona shaft B', at the lower parts of the posts A, A. This shaft B', alsohas a part pinion C', at each end, which pinions gear into racks (i) (i)on the lower parts of rods D', the upper ends of which have hooks uponthem, which hooks catch over projections (lc) on the frame T, when saidframe is depressed and the plunger U, within the mold V. The racks (L)on theback sides of the arms (g) (g) gear into segments E, E, which areplaced on a shaft F', at the back of the posts A, A. This shaft has apin (Z) attached to it against which pin a pin (m) on the inner end ofthe shaft L, acts intermittently as will be presently described. To theupper cross head of the frame T, there are attached springs (n) (n), thelower ends of which bear against the rods D'.

Operation: Suppose the several parts of the machine to be in theposition shown in black Fig. 2, the sand or clay box X, being underneaththe hopper Z,`the plunger U, being raised, and the block or mold clearerW, at the upper end of the mold. Y The sand or clay is placed in thehopper Z, and the sand or clay will fall into the box X, as shown inFig. 2. Motion being given the pulley C, the toothed flanch (a) willstrike the toothed portion of the periphery of the wheel K, and theshaft L, will of course be rotated, the crank M, and pitman N, drawinginward the u-pper end of the lever frame O. As the upper part of thelever frame is drawn inward the pitman Y, pushes the sand or clay box X,from underneath the hopper Z, and over the mold V, and when the saidclay box is over the mold projections (a') on the sides of the sand orclay box strike against the rods D', and throw the upper ends of saidrods free from the projections (la) on the frame T. When the parts arein this position the pin on the shaft L, strikes the pin (l) on theshaft F', and said shaft with the segments E', E', and part pinions C',C', will be turned, and as the segments E', gear into the racks (h') andthe part pinions C', gear into the racks the block or mold clearer W,and the rods D', will descend, the block or clearer resting upon thebottom of the mold V. The crank M, and pitman N, then throws the upperpart of the lever frame O, outward and the pitman Y, throws back thesand or clay box X, underneath the hopper Z. The toothed portion of theperiphery of the wheel H, then gears into the toothed portion of theperiphery of the pinion J, and the shaft I, is turned by the wheel E,which now gears into the pinion F, the crank P, and pitman Q, drawinginward the toggle R, and forcing the plunger U, within the mold V, saidplunger compressing the sand or clay which fell'from the box X, intosaid mold when the box X was over it. When the toggle R is straight, orwhen its two arms are in line the plunger is depressed t0 its fullestextent, and the crank P, and pitman Q, now raise the frame T, and

plunger U, and the springs (n) (n) when the frame T, was depressedforced the hooks on the rods D', over the projections on said frame, andas the racks on said frame gear into the part pinions C', it followsthat as the frame T, and plunger U, rise the shaft B', will be turnedand the block or mold clearer W, will also be raised in consequence ofthe part pinions A', gearing into the racks (h) (7L), and the partpinions A', C', are so proportioned that the block or mold clearer willrise slower than the plunger, so as to allow said plunger to besuficiently raised and be beyond the reach of the pressed brick, whichis forced up out of the mold by the block or clearer W.

It will be seen that the plunger U, is raised or commences to be raisedwhen the arms of the toggle are straight, so that con` siderable poweris obtained when power is required. The brick is pressed in hollow form,as shown in Fig. 3, in consequence of the core or projection (c) in themold, and the recess (f) in the plunger.

The above machine in consequence of its parts being operated as shown,is rendered perfectly automatic, and the toothed portions of the wheelH, and pinions J, K, are made to fall in gear perfectly at the propertime by having'lugs (b') attached to them which come in contact justbefore the teeth and serve as guides.

We do not claim the mold V, plunger U.

and sliding sand or clay box X, for theyV have been previously used formolding and pressing hollow brick, although operated separately, andquite differently arranged from the plan herein described.

What we claim therefore as new and desire to secure by Letters Patent,is,

Connecting the plunger U, with the block or mold clearer' WV, by meansof therods D', having the racks (i) on their lower parts, which racksgear int-o the part pinions C', C', on the shaft B', whereby the plungeris allowed to rise more rapidly than the mold clearer as hereindescribed.

MARTIN BUCK. J. H. BUCK. F. A. CUSHMAN,

Witnesses:

HENRY T. KENnrox, TIMOTHY KENRICK.

